计算机及网络给人们带来巨大便利的同时,也会随时面临某些漏洞和隐患的危害。计算机及网络安全问题与病毒防护一直困扰着人们安全使用计算机,解决计算机网络安全问题刻不容缓。本文分析了危害计算机网络安全的几个方面,并就计算机病毒的产生及其对计算机网络系统的攻击进行了剖析,提出了保证计算机网络系统安全的一些常用方法。 While computers and networks bring great convenience to people, they are also exposed to certain loopholes and hidden dangers at any time. Computer and network security problems and virus protection has been plagued by people’s safe use of computers, solve the problem of computer network security without delay. This article analyzes several aspects that endanger the safety of computer networks and analyzes the generation of computer viruses and their attacks on computer network systems. Some commonly used methods to ensure the security of computer network systems are put forward.